Harley Evolution Engine

The Evolution engine widely known as Evo or Blockhead is an 45 degree, V-twin motorcycle engine manufactured by the Harley Davidson Motor Company. It was displacement for HD Big Twin bikes, replacing the Shovelhead engine.

Most analysts consider the Evolution Engine, saved the reorganized Harley-Davidson company from certain bankruptcy. It took seven years of development before the Blockhead made it’s appearance in 1984, and it provided 15 years of durable service.

Harley-Davidson unveils the 1340cc V²® Evolution® engine on five models. The result of 7 years of development and research, the Evolution engine produces more power at every speed, runs smother, cleaner and is oil-tight.

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Harley - Flathead Engine

A flathead engine manufactured between 1929 and 1974. Flathead engine also called Sidevalve engine or Flatty. Flathead did not have overhead valves, it is an internal combustion engine with valves placed in the engine block beside the piston. The design was common on early engine designs. The advantage of a flathead was simplicity in their design, had no push rods or rocker arms. A typical flathead engine produced about 22 horsepower and had a displacement of 45 cubic inches.

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The Superior Accessory Company has been specializing in Harley Parts since the 1930’s. Bikers around the world can testify that Superior parts have helped to keep them on the road after all these years.



We at Superiormcsupply have some of this branded aftermarket products for your Harley. Take advantage of buying from our Superior Section. Get the original Harley parts at affordable prices. Once this stuff is gone it is Truly GONE!!!

Superior brand engine for Harley

Your motorcycle is the significant investment. The Superior brand engine section consists of high quality components that will keep your motorcycle running. Superior parts can help you take care of any and all engine troubles that may come your way.

Whether you are building, rebuilding, or fixing your motorcycle engine, there are many parts that are offered by Superior. You have valves, pushrods, tappets, cylinders, hydraulic lifter units, rockers, connecting rods, engine crank pins, sprocket shafts, pistons, pinion gear shifts, and so much more. All of these items are necessary to make your engine work the way it is supposed to work and it is very important that the parts are of a high quality.

Check out some of our Harley aftermarket stocks.

1.  Exhaust
2.  Carburetor
3.  Motorcycle Mirror
4.  Axles
5.  Engine Sprockets
6.  Petcocks & Fitting
7.  Gas Tank Caps
8.  Fuel & Online
9.  Kickstand
10. Seats
11. Grips
12. Rubber Mounts
13. Harley Replacement Rubber Parts
14. Cables
15. Ball Bearings For Harleys
16. Loose Steel Balls For Harleys
17. Loose Needle Roller Bearings (Made in USA)

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